Post-term newborn

**Definition:** A condition of the newborn characterised by a gestational period that reached or exceeded 42 completed weeks (294 days or more) of gestation.

**Long definition:** Maternal characteristics leading to post-term pregnancies include oligohydramnios, a history of decreased fetal movements, a low estriol and abnormalities in fetal heart rate patterns The etiology of post-term pregnancy includes hypoplasia or hyperplasia of the adrenal gland, placental sulfatase defiency and a poorly functioning placenta. There is an increased incidence of calcifications in the placenta. 25% of post-date pregnancies will develop into the Post Maturity Syndrome (PMS). There is an increased incidence of cerebral palsy infants who are post-term.

**Exclusions:** - Postmaturity syndrome